search for: plotfit

Hello, to plot the result of a singular non linear regression (using nls) I usually use the function plotfit, for example: r.PTG.V<-nls(PTG.P~ fz1(Portata, a,b), data=dati, start=list(a=10, b=10), nls.control(maxiter=200), algorithm='port', trace=TRUE, na.action=na.omit, lower=list(a=0, b=10), upper=list(a=100, b=100)) plotfit(r.PTG.V) I tried to use the function plotfit on the result of the...

I've just encountered a segfault when using DierckxSpline::percur function. Below is the minimal example which triggers the error: --- library(DierckxSpline) x <- 1:10 y <- rep(0, 10) pspline <- percur(x, y) --- *** caught segfault *** address (nil), cause 'memory not mapped' Traceback: 1: .Fortran("percur", iopt = as.integer(iopt), m = as.integer(m), x =

...e is now available on CRAN. In this version, both 'smooth.basis' and 'smooth.basisPar' have been modified to make them easier to use. They have more useful defaults and they return an object of class 'fdSmooth', with methods for 'plot', 'lines', and 'plotfit'. In addition, there have also been improvements to the 'plotfit' function and the 'CanadianWeather' data. Also, a function 'norder' has been added, which returns the order of a B-spline. Spencer Graves _______________________________________________ R-packages m...

...e is now available on CRAN. In this version, both 'smooth.basis' and 'smooth.basisPar' have been modified to make them easier to use. They have more useful defaults and they return an object of class 'fdSmooth', with methods for 'plot', 'lines', and 'plotfit'. In addition, there have also been improvements to the 'plotfit' function and the 'CanadianWeather' data. Also, a function 'norder' has been added, which returns the order of a B-spline. Spencer Graves _______________________________________________ R-packages m...

...the functions documented in the Blue Book that I found missing in R (ignoring the ones which are obviously outdated). aggregate allocated amatch axes chull clorder cutree cycle date debugger dget discr faces interp l1fit labclust lag loglin monthplot mstree mulbar napsack odometer persp plclust plotfit rep.int restore rreg sabl sablplot set.seed smooth sort.list Stable stars starsymb storage subtree symbols tempfile tslines tsmatrix tsplot tspoints twoway unlink usa xor In some detail: aggregate cycle lag smooth tslines tsmatrix tsplot tspoints: Obviously useful for time series. Andreas ha...

...ls(NT.N~ fz1(Portata, a,b), data=subset(dati,river.name=="Laveggio"), start=list(a=10, b=10), nls.control (maxiter=200), algorithm='port', trace=TRUE, na.action=na.omit, lower=list(a=0, b=0), upper=list(a=1000, b=1000)) and then I get the results with summary() and the graph using plotfit() but this will get extremly long since I have 12 rivers to analize for every variable and then compare the results, so I'd like to use a loop (cycle for??) but I can't figure out how it works. I've tried to look on the help page on ? Control (control flow) but I didn't understand...

...nvir = envir) : object 'FUN' of mode 'function' was not found Can you help me doing this non-linear regression by groups work? Also, after I manage making the regression, I'd also need fitting a line to the nDMTRBgm2~nDMTRBgm2.T.1 data using the same model above. I've used plotfit to do that with one nlm data set. Is it possible to fit each group trend line and data with different colours/symbols in one same graphic? Thank you, Cristiano -- Cristiano Yuji Sasada Sato Doutorando Programa de Pós-Graduação em Ecologia e Evolução - IBRAG / UERJ Laboratório de Ecologia de Rio...